what we need check for pre-design plastic mould?

what we need check befor making plastic mould?that must include the followings:mould number and overall mould base size(Length,Width and Heigh),view of cavity and core side,longitudinal cross section,steel material type,ejection stroke,tie bars of inended injection machine,top of plastic mould,operator side,part orientation,demoulding direction,runner and gate location,part line plane,lifter,sliders,guide pins.Press Platen swing study must also be included in preliminary stage.

1)Level of part data for plastic mould design is the latest?Show change index of part in the drawings.

2)Is correct shringkage used?Show the shringkage in the drawings.

3)Locating ring dimensions.

4)Title blocks to show plastic mould number,injection machine tonnage,shrinkage,part name,part number,raw material,wall thickness,supplier information.

5)Eastablish plastic mould concept including steel sizes,parting lines,slider,lifers and mechanisms -plan view and sections.

6)Does customer rquest that plastic mould is designed to run automatiocally?

7)Guide pin positions(one is offset)

8)Cold sprue,hot sprue,or manifold is all views and sections with detail dimensions.

9)Show tie bars in view of core side.Information of tie bars is provided by customer.

10)Show eyebolt holes in all views and sections and ensure that correct size is used for weight of tool

11)Ejector stroke dimensions

12)Part ejection method—show in all views.

13)Are ther any demoulding cocerns that require part concessions?if yes,part demoulding analysis is required with clear problem explanation and sent to customer for next negotiation.

14)Clamping features on fore sides of plastic mould.Floww custmer request of plastic mould champing:

15)Type of steel,sizes for blocks and plates.

16)Top of plastic mould,operator side or non-operatore side.

17)Weight of total plastic mould,cavity side and core side.

18)Plastic mould ejection method shown-knock/hydraulic/mechanical spring return

Approval of the preliminary design means plastic mould concept and size is OK,so we can order steel of cavity,core and plastic base with steel type confirmed by customer.